lookahead-slices 0

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 0 -o "{o}" -
14 11408.4 kbps 0.9996305099167596 98.79256800035209 10.99 fps
18 6558.96 kbps 0.9993219761481819 98.56004542467818 12.79 fps
22 4141.36 kbps 0.9987442166982069 98.10837686237001 14.36 fps
26 2712.68 kbps 0.9975770491538096 97.15973053300497 15.68 fps

lookahead-slices 1

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 1 -o "{o}" -
14 11408.4 kbps 0.9996305099167596 98.79256800035209 10.9 fps
18 6558.96 kbps 0.9993219761481819 98.56004542467818 12.83 fps
22 4141.36 kbps 0.9987442166982069 98.10837686237001 14.21 fps
26 2712.68 kbps 0.9975770491538096 97.15973053300497 15.58 fps

lookahead-slices 2

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 2 -o "{o}" -
14 11462.79 kbps 0.9996312332285259 98.79363344707856 11.02 fps
18 6573.37 kbps 0.999323126428481 98.55736932026372 13.13 fps
22 4150.26 kbps 0.9987465333734666 98.11265854615553 14.75 fps
26 2719.7 kbps 0.9975822843293358 97.17338631025001 16.43 fps

lookahead-slices 4

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 4 -o "{o}" -
14 11432.93 kbps 0.9996313705448616 98.79407737594552 11.01 fps
18 6566.47 kbps 0.9993227858321845 98.55635387645603 13.09 fps
22 4140.64 kbps 0.9987467996677191 98.10413561907617 14.87 fps
26 2720.22 kbps 0.9975837847020722 97.16102693935036 16.58 fps

lookahead-slices 6

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 6 -o "{o}" -
14 11449.52 kbps 0.9996313484356344 98.79335922368553 11.06 fps
18 6573.38 kbps 0.9993219082765025 98.55805236655314 13.26 fps
22 4141.38 kbps 0.9987450820694318 98.10309504511055 15.15 fps
26 2719.53 kbps 0.9975763363450498 97.1649064613126 16.86 fps

lookahead-slices 8

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 8 -o "{o}" -
14 11437.54 kbps 0.999631605299326 98.79490154380241 11.1 fps
18 6563.05 kbps 0.9993228263768311 98.55863243131435 13.3 fps
22 4136.08 kbps 0.9987465665281731 98.10685716674234 15.01 fps
26 2717.14 kbps 0.9975795108115417 97.15490477712996 16.75 fps

lookahead-slices 12

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 12 -o "{o}" -
14 11437.54 kbps 0.999631605299326 98.79490154380241 11.1 fps
18 6563.05 kbps 0.9993228263768311 98.55863243131435 13.25 fps
22 4136.08 kbps 0.9987465665281731 98.10685716674234 15.01 fps
26 2717.14 kbps 0.9975795108115417 97.15490477712996 16.75 fps

lookahead-slices 16

q bitrate ssim vmaf speed x265 --y4m -D10 --asm avx512 -pslowxx --crf {q} --lookahead-slices 16 -o "{o}" -
14 11437.54 kbps 0.999631605299326 98.79490154380241 11.05 fps
18 6563.05 kbps 0.9993228263768311 98.55863243131435 13.25 fps
22 4136.08 kbps 0.9987465665281731 98.10685716674234 15.03 fps
26 2717.14 kbps 0.9975795108115417 97.15490477712996 16.77 fps